Electric spontaneous polarization in YbFe2O4

T. Nagata, P. E. Janolin, M. Fukunaga, B. Roman, K. Fujiwara, H. Kimura, J. M. Kiat, N. Ikeda

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

We report the observation of the electric spontaneous polarization in YbFe2O4, one candidate “electronic ferroelectric,” where ferroelectricity originates from the polar charge order. Though we have proposed that in LuFe2O4 polar charge ordering of iron ions having different valence states give rise to ferroelectricity, some reports questioned not only the electronic origin but also the existence of the ferroelectricity itself in this system. In response to this, we show a direct macroscopic evidence of the existence of the ferroelectricity by a clear P-E hysteresis loop of YbFe2O4 belonging to the same system as that of LuFe2O4. Although further investigations are required about the electronic origin, we report the direct observation of the macroscopic electric polarization.

Original languageEnglish
Article number052901
JournalApplied Physics Letters
Volume110
Issue number5
DOIs
Publication statusPublished - 2017 Jan 30

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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